Safety-razor-blade stropper



Aug. 28, 1923. 1,466,605

F. o. THOMAS SAFETY RAZOR BLADE STROPPER Filed July 9, 1921 attonwq c is alternately consists in Patented Aug. 28, 1923.

' 1,456,605 r ce,

Pastime. remains, or L crtossE, isconsin,

sernrv-nazon-srann s-rnorrnn, 1

Application filed July i 9,

T 0 all whom it may concern: s

Be it known that FRANK O. THOMAS, a citizen of the-United states of America, residing at La Crosse, in'the county of La" Crosse and State of lVisconsin, has invented new and useful improvements in Safet Razor-Blade Stroppers, of which the following is a specification.

'ihe object of the invention is to provide a simple and efiicient means for stropping a. safetyrazor blade under conditions insuring the application of the of the ordinary form under conditions insuring the dressing of the edge of'the blade at the proper angle for eff ctive use; and moreover to provide means in connection with a device of this kind whereby the blade: reversed to avoid the necessity a reversal by the turning of the. hand of the operator; and more particularly to provide means whereby a draw edge may be imparted to the blade to correspond with that which is applied to a razor blade when manually stropped by a skilled operator; and with these objects in view the invention a construction and combination of effecting of parts of shown in wherein c,

Figure 1 is a view of the stroppe r show ing it applied in the operative positlon to a strop.

Figure'2 is a the accompanying drawings,

plan view of the same showing in full and dotted lines respectively the positions of the parts in making a stropping stroke in opposite directions.

' Figure 3 is a longitudinal sectional view of the device.

Figure 4: is a reversed Figure 5 is a View of detached.

Figure 6 is which carrie the housing.

Figure 7 is a detail plan, and Figure 8 is a detail side view of a portion of the device showing the blade holder locked to prevent oscillatory movement of the spindle thereof.

The device consists essentially of a blade holder 10 of which the spindle 11 is mounted in suitable hearings in a housing 12 carplan view in detail. the handle or grip rled by a shank 13, and mounted'also in hearings in the housing and parallel with the spindle of the blade holder is a bearing roller 14 having a rubber or like frictional surface which is operatively connected with blade to a strop for the spindles of the which a preferred embodiment is parallel with the shank, the

- arranged in an Y b 2 face of the strop, a detail'view of the shank;

1921. Serial N0.483,530.

the spindle of the roller by means of the in 'termeshing gears 15 and 16. As the implement traverses the strop indicated at 17, alternating in opposite directions as in the usual operation ofstropping, the contact of thebearing roller with the surface of the strop causes'the reversal of the blade holder in correspondence with the motion ordinarily imparted to the razor blade manually in'the stropping operation.

Removably'engaged with the shank of the apparatus is a grip or handle 18 having a socket portion 19 with inwardly directed lugs 20 for engagingthe shank while the a p paratus is in use and permitting of removal of the handle for compactness in storing when the device is not in use. I

As will be understood the housing may be of any desired construction preferably serving as a means of protecting the gearing lo which reverse motion is communicated to the spindle of the blade holder, the function.

otherwise thereof being that ofa mounting blade holder and the bearingroller, andin order to provide for imparting a draw edge tothe which is being stropped this mounting is preferably 'pivotally mounted upon the shank to which the grip or handle is attached, to provide for a limited oscillatory orswinging movement of the mounting and hence of the spindles of the blade holder and bearing roller with relation to but in a plane pivot being ina limiting pin 22 being arcuate slot 23 to determine the extent of angular movement mountingrelative to the shank.

Therefore as the implement is moved with the bearing roller in contact with the surto cause the reversal of the mounting carrying the said dicated at 21 and blade holder, the

blade holder and bearing roller receive an oscillatory or swinging movement in a plane parallel with the path of movement of the of the 7 razor blade shank, to present the edge ofthe razor blade which is indicated at 24 at an angle less than ninety degrees to the path of movement of the blade on the strop, to impart to the blade edge a draw which is essential in producing a keen and effective edge on the blade. i

When it is desired to use the stropper without the advantage of the oscillatory movement of the blade holder, which is illustrated partly in Figure 2, the grip or verse terninal shoulder handle 18which is slidingly mounted upon the hank l3 by means or the guidesQO may be moved inward to bring the abrupt trans- 21 of said grip or iandle into contact ith the adjacent end of the housing 12 as shown inFigures 7 and 8..

Having described the invention, what is claimed as new and useful is 1. A razor-blade stropping device having a shank, a reversible blade holder and hear ing roller arranged in axial parallelism, mounting earrying said blade holder and roller and pivotally mounted upon the shank for oscillatory movement transversely ot the shank, and a grip or handle slidingly.

mounted on the shank and provided with means for engaging and locking said mounting in a fixed position.

2. A razor blade stropping device having a shank, a reversible blade holder and bearing roller arranged in axial parallelism, a mounting carrying said blade holder and roller and pivotally mounted upon the shank tor oscillatory movement transversely of the shank, and @grip or handle slidingly mounted upon he shank and having an abrupt inner end for engagement with said mounting-to lock thelatter against oscillatory movement.

In testimony whereof he ailixes his signature.

FRANK O. THOMAS. 

